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Finding the Fourth Proportional to 639,702.01, 959,885.11 and 260,900.65

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Solution

The fourth proportional to 639,702.01, 959,885.11 and 260,900.65 is: 391,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,702.01 : 959,885.11 = 260,900.65 : x
  2. Step 2: Convert to fraction form
    639,702.01/959,885.11 = 260,900.65/x
  3. Step 3: Cross multiply
    639,702.01x = 959,885.11 × 260,900.65
  4. Step 4: Simplify right side
    639,702.01x = 250,434,644,324.90
  5. Step 5: Solve for x
    x = 250,434,644,324.90/639,702.01
  6. Step 6: Final answer
    x = 391,486.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.